\(1\,k\Omega \) લોડ અવરોધ ધરાવતું \(NPN\) ટ્રાન્ઝિસ્ટર કોમન એમીટર એમ્પ્લિફાયર તરીકે વર્તે છે.બેઝ એમીટરપાસે સિગ્નલ વૉલ્ટેજ \(10\,mV\) લગાવતા તે એમ્પ્લિફાયરના કલેક્ટર પ્રવાહમાં \(3\,mA\) અને બેઝ પ્રવાહમાં \(15\,\mu A\) જેટલો ફેરફાર થાય છે? તો ઈનપુટ અવરોધ અને પ્રવાહ ગેઇન કેટલા હશે?

A \(0.67\,k\Omega ,300\)
B \(0.67\,k\Omega ,200\)
C \(0.33\,k\Omega ,1.5\)
D \(0.33\,k\Omega ,300\)

Verified Solution

Answer & Solution

Correct Answer

(A) \(0.67\,k\Omega ,300\)

Step-by-step Solution

Detailed explanation

Input current \(=15 \times 10^{-6}\) Output current \(=3 \times 10^{-3}\) Resistance out put \(=1000\) \(\mathrm{V}_{\text {input }}=10 \times 10^{-3}\) Now \(V_{input}\) \(=\) \(r_{input}\) \(\times\) \(i_{input}\)…

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

Same subject

Explore more questions on app

From JEE Mains

Explore more questions on app